Limits on the Majorana neutrino mass in the 0.1 eV range

被引：307

作者：

Baudis, L

Dietz, A

Heusser, G

Klapdor-Kleingrothaus, HV

Krivosheina, IV

Kolb, S

Majorovits, B

Melnikov, VF

Päs, H

Schwamm, F

Strecker, H

Alexeev, V

Balysh, A

Bakalyarov, A

Belyaev, ST

Lebedev, VI

Zhukov, S

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Kurchatov Inst, Russian Sci Ctr, Moscow 123182, Russia

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.83.41

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Heidelberg-Moscow experiment gives the most stringent limit on the Majorana neutrino mass. After 24 kg yr of data with pulse shape measurements, we set a lower limit on the half-life of the 0 nu beta beta decay in Ge-76 of T-1/2(0 nu) greater than or equal to 5.7 x 10(25) yr at 90% C.L. (after PDG98 [C. Case et al., fur. Phys. J. C3, 1 (1998]), the sensitivity of the experiment being T-1/2(0 nu) greater than or equal to 1.6 x 10(25) yr at 90% C.L. We thus exclude an effective Majorana neutrino mass greater than 0.2 eV (0.39 eV sensitivity), using the matrix elements of A. Staudt, K. Mute, and H. V. Klapdor-Kleingrothaus, Europhys. Lett. 13, 31 (1990). This limit sets strong constraints on degenerate neutrino mass models.

引用

页码：41 / 44

页数：4

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